DARPA has created an Experimental Spaceplane (XS-1) to create a new paradigm for more routine, responsive, and affordable space operations. In an important step toward that goal, DARPA has awarded prime contracts for Phase 1 of XS-1 to three companies: The Boeing Company (working with Blue Origin, LLC), Masten Space Systems (working with XCOR Aerospace), and Northrop Grumman Corporation (working with Virgin Galactic).
from NASA Tech Briefs – Nasa Tech Briefs http://ift.tt/1ohciwB
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